Warp stop-motion



E.- R. HOLMES.

WARP STOP MOTION. APPLICATION FILED AUG-5. 19l8:

Patented Nov. 30, 1920..

2 SHEETSSHEE T 1- WWW w/ E. R. HOLMES. WARP STOP MOTION. APPLICATION FILED AUG-5| 1918- 1 ,360,638. Patented Nov. 30, 1920.

2 SHEETS-SHEET 2.

UNiTED STATES PATENT foFFlcE. i

ELBRIDGE R. HOLMES, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR T0 CROMPTON'8z v KNOVILES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION O MASSACHUSETTS.

WARP STOP-MOTION.

Application filed August 5, 1918. Serial No. 248,268.

To all whom it may concern: l

' Be it known that T, 'ELBRIDGE R. HOLMES, a citizen of the UnitedStates, residing at lVorcester, in the county of Vorcester and general type shown in the patent to Regan,

No. 1,265,112, dated May7, 1918.

In this type of warp stop motion, inv its preferred form, non-circular controlling or detecting rods are used through openings in the drop wires and which are held from movement when engaged by a fallen drop wire. These controlling rods, when thus held from movement, render a separately mechanism operative to stop the loom.

It is the object of my present invention to provide a warp stop motion of this type in which a single driven member actuates the detecting rods and also the knock-otfmechanism, and it is a further object of my invention. to provide such mechanism in a peculiarly simple and effective form.

With these objects in view, my invention consists in certain arrangements and COID- binationsof parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings, in which- Figure 1 is a side elevation of a loom with my improved stop motion mounted there- Fig. 2 is an enlarged side elevation of the stop motion itself;

Fig. 8 is a rear elevation of the parts shown in. Fig. 2;

Figs. 4; and 5 are side elevations similar to Fig. 2, but showing the parts in different positions;

Fig. 6 is a detail perspective view of one of the caps used to hold a detecting rod in position;

Fig. 7 is a detail sectional elevation taken along the line 7-7 in Fig. 2; i

8 is a detail horizontal section taken along the line 8-8 in Fig, 7, and

9 shows a type of drop wire which may be used in my improved stop motion.

which extend actuated knock-off Referringto Fig. 1, I haveshown aloom side 10 0n which one end of the usual bot-' tom or cam shaft 11 is mounted in a bearing 12, said shaft being provided with a cam 13 grooved on its side face to receive a cam roll 14 mounted on one end; of a lever 15 pivoted. at 16 to the loom side 10. A link 17 is con nected at 18 to the opposite end of the lever 15, and the upper end of the link 17 is pivoted at 19 to an arm 20 loosely mountedon a stud 21 fiXed in an end member 22-forming part of the stop motion casing or frame.

The end member 22 is adjustably secured on an L-shaped rod 23, the opposite end thereof being adjustable in a post2at which in turn is vertically adjustable in a socket 25 secured to the loom side 10. The opposite end of the stop motion is similarly sup- Specification of Letters Patent. Patented NOV. 30, 1 920. I

ported and in this way provision is made for vertical, longitudinal, and lateral ad ustment thereof. i I

Detecting rods 26of non-circular cross section extend through openings 27 (Fig. 9)

in drop wires 28, said openings 27 being of sutlioient width in theii lower portions to tecting rods 26 are rotatably supported in the end members 22.

A preferred method of; supporting the ends of the rods- 26 is shown iii-Figs. 7 and 8 in which a bushing 30 is rotatably mounted in a portion of the frame member 22. A cylindrical hole 31 is drilled part way through the bushing 30, of sufficient sizeto receive the rod 26. The remaining end portion of the bushing,v which is not drilled, is provided with a slot 32 corresponding in width to the thickness of the rod 26 and communicating with the hole 31. The rod 26 can therefore be passed freely through the bushing, but is non-rotatable therein.

An arm. 33 is rigidly secured to the unslotted end of the bushing30 for a purpose the arms 33 for said rods are connected to gether at their outer ends by a link 35 (Fig.

2). The right-hand arm 83 as viewed in Fig. 2, is formed with an upwardlyextending portion 83 to which one end 01' a connection 36 is pivotally connected at 37, said connection being U-shaped and the opposite end thereof being slidable in a rocking stud 38 mounted in a forked arm 39 formed integrally with the arm 20 previously described. A collar 10 limits downward movement of the connection 36, and a spring 11 interposed between the rocking stud 38 and a collar 42 yieldingly forces the connection downward. to the position shown in Figs. 2 3 andA.

Under normal conditions the arm 20 and its extension 39 are rocked continuously by the cam 13 acting through the link 17, and the detector rods 26 are moved alternately from the position shown in Fig. 2 to the position shown in Fig. 4.

Almock-ofl rod 43 (Fig. 1) has a lost motion connection at its front end to an arm 4A pivoted to the loom side at 45 and connected at l6 to a link 17 through which other parts of the knock-oil mechanism of the loom are controlled. The usual shipper lever 4:8 is also provided for manual control of the knock-off mechanism. The rear end of the rod :13 is connected at 49 (Fig. 2) to a member 50 loosely mounted on the stud 21 and having a latch 51 pivoted thereto at 52, said latch being adapted to engage a tooth or projection 53 on an arm projecting downward from the arm 20 previously described. The latch 51 is also provided with an arm 55 positioned for engagement by a pin 56 mounted on a slide 57 adjustably secured to the left-hand detector rls the detectors are swung from the position shown in Fig. 2 to that shown in Fig. 41-, the arm is raised and the latch 51 is moved out of the path of the moving projection 53. Under these conditions the knockoff mechanism remains undisturbed and the member 50 rests against the stop 58 on the frame member 22.

lVhenever a drop wire falls, however, the oscillating detecting rods 26 and the connected arms 33 are held in the position shown in Fig. 5, with the pin 56 removed from the position in which it depresses the latch 51. The latch 51 is therefore positioned for engagement by the projection 53, and the member 50 is moved thereby to the position shown in Fig. 5, such movement being sufiicient to operate the knock-off mechanism through the connecting link 13. During such movement, the spring 11 is compressed as shown in Fig. 5, but is restoredto its original length upon the return movement of the link 17.

Having thus described my invention, it will be evident that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereoi as set forth in the claims.

and I do not wish to be otherwise limited to the details herein disclosed, but what l c aim 1. A warp stop motion having, in combination, a plurality of drop wires arranged in parallel banks, oscillating detecting rods for said drop wires, arms and linkage connecting said rods to oscillate together, actuating means for said rods including a yielding connection, knock-off 'mechanism. and connection between said actuating means and said mechanism including an engaging device normally in engaging position but movable from engaging position on every unobstructed oscillation of said rods. 2. In a warp stop motion, a yielding ronnection coniprising a U-shaped rod having a shorter portion terminating in an eye, and having a longer straight portion upon which a compression spring is adjustably secured.

In testimony whereof I have hereunto afliXed my signature.

ELBRIDGE R. HOLMES. 

